高Ca^(2+)地层水条件下一种调驱剂的研究  

A Profile Control and Oil Displacement Agent’s Recovery under High Ca^(2+) Concentration Formation Water

作　　者：刘平[1] 李科生[1] 南国立[1] 郑卫宏[1] 王正坤[1] 刘明峰[1] 

机构地区：[1]中原油田分公司采油二厂

出　　处：《断块油气田》2004年第6期68-69,共2页Fault-Block Oil & Gas Field

摘　　要：高温高矿化度地层条件下 ,交联聚丙烯酰胺调驱剂的稳定性能较差 ,Ca2 +等二价金属离子是影响其稳定性的一个重要因素。而Na2 ××可充分利用地层水中的Ca2 +与其反应产生沉淀起调堵作用 ,水解产生的碱与原油中的石油酸反应产生表面活性剂起驱油作用。文中研究了Na2 ××产生沉淀的条件 ,降低油水界面张力的活性能力 ,对地层的堵塞能力 ,对比评价了交联聚丙烯酰胺调驱剂与Na2 ××调驱剂的调驱效果。结果表明 ,Na2 ××调驱效果明显好于交联聚丙烯酰胺调驱剂。The stability property of crosslinked PAM agent which form under high temperature and high salinity formation condition is bad .Among which,Ca 2+ is an important factor which effects the system’s stability property,but Na 2 ××can react with Ca 2+ to achieve plug.The surfactant which got through the hydrolization’s alkalis and crude oil's acid can displace oil The paper studied the condition of Na 2 ××to produce preapition,plug property to formation,activity property of declining interfacial tension Comparing and evaluating the effect of the crosslinked HPAM and Na 2 ××under high temperature and high salinity formation condition,the result shows that the effect of profile control and displacement of Na 2 ×× is obviously superior to crosslinked HPAM

关 键 词：Na2×× 调驱机理 界面活性 堵塞能力 调驱效果 

分 类 号：TE347[石油与天然气工程—油气田开发工程]